4890 OC limit fixed!

[Booj]

I'm hoping for some details by the weekend for a little bench gathering some of us i4memory guys are planning, this might help us hit 37k 06

[dinos22]

you can control 2D/3D without bios updates

[chew*]

Railmeat,

most of the "guys" that you mention can "mod" bios's with RBE and what not...very true......but bad things can happen when you do a True bios Mod and start rewriting bios...Not to many people can do this or have the necessary "tools" or knowledge to do so.....nor can many break encryption....

Took me 3 weeks to crack certain things in the bios and still not perfect yet with the right tools.

[purecain]

looking forward to some decent clocks.... bring on the bios.....

[Sampsa]

chew*, enough talking. .lets see some 3D numbers

[cowie]

come on railmeat.
no self respecting card modder rma's.
And how many times has a modded bios mucked up things more then the stock one?
not to mention the fact that there is alot of gamers that would not know a cfg file from a whole in the ground.

lets move off this and let the overclockers add more on topic discussion

[sofos1990]

chew*, enough talking. .lets see some 3D numbers

100% agree

[chew*]

chew*, enough talking. .lets see some 3D numbers

In due time bud, I have alot on my plate atm.

When all the stars are aligned correctly and all the hardware is ready I will have some results.

Seriously railmeat, everyone has there own strengths and weaknesses....I suck at hardmods....I'm sure sham and hipro could hardmod in there sleep.....

[dinos22]

chew*, enough talking. .lets see some 3D numbers

heheheheh
just a little push

[chew*]

tough crowd

[runmc]

tough crowd

Hungry for some excitement

[dinos22]

Hungry for some excitement

[SF3D]

This bios what I am talking here will have to be delayed a bit. Sorry!

We run out to some new issues under LN2. It was not the cold bug, cause there is no such thing. I could run Vantage at 1250MHz core speed, but other benchmarks was not ok at that speed. So we have something else holding us back. We are going to search the reason for this. If someone can modify bios just change SPLL_REF divider and you are good. This issue have haunted ATI cards since R600.

But for real Chew, it is time to show some results. You are just talking here, but if you did not change that value I am talking about, your bios will not do anything serious.

[dinos22]

i'm assuming that will not hinder the vRAM clocks as you scale up in MHz > SPLL_REF

[Jor3lBR]

We run out to some new issues under LN2. It was not the cold bug, cause there is no such thing. I could run Vantage at 1250MHz core speed, but other benchmarks was not ok at that speed.

I've noticed the same thing with the 4890's. Runs Vantage fine when heavily OCied but gets stuck on 3DMark06 or 01...

[chew*]

This bios what I am talking here will have to be delayed a bit. Sorry!

I could run Vantage at 1250MHz core speed, but other benchmarks was not ok at that speed. So we have something else holding us back. We are going to search the reason for this. If someone can modify bios just change SPLL_REF divider and you are good. This issue have haunted ATI cards since R600.

Only a suggestion,
I think your fix can be found in the 4870 and applied to 4890.

I did do a little foot work benching on retail

http://www.xtremesystems.org/forums/...d.php?t=227554

[blossa]

I've noticed the same thing with the 4890's. Runs Vantage fine when heavily OCied but gets stuck on 3DMark06 or 01...

About the same thing here. However, for me it also some strange behavior like that 3D06 passes @ 1065/1050 and 1065/1140, while Vantage fails @ 1065/1140 but works at 1065/1150 and 1065/1165 where 3D06 fails. 1065/1035 works for Vantage but i cannot make 3D06 pass that. Don't take this for a fact, i can also be me to blame...

3D06@1065/1165
NA

3D06@1065/1150


Vantage@1065/1165


Vantage@1065/1150


And with W3540 and some CPU-clock (i have not tested with 1065MHz on the cores):
3D06@1050/1150


Vantage@1050/1150

[SF3D]

Only a suggestion,
I think your fix can be found in the 4870 and applied to 4890.

I did do a little foot work benching on retail

http://www.xtremesystems.org/forums/...d.php?t=227554

What was in that thread you posted pictures of all hardware you have got and you benched 4890 cards at 1050MHz. Did I miss some important part now?

What fix are you talking about? 4870 did not suffer from SPLL_REF Divider issues.

[chew*]

What fix are you talking about? 4870 did not suffer from SPLL_REF Divider issues.

Exactly......besides core speeds/PWM whats the difference from a 4870 to a 4890........ram timings and clock speed of the same GDDR 5.

Why not try importing ram timings / speeds from 4870 and then try out those core clocks.....

[SF3D]

and... ?

*I am playing stupid here, cause you try to be mysterious.

[chew*]

I don't know how more clear I can be....I think the ram clocks and timings of the ram on the 4890 are hindering core clocking........Import the timings and clock speeds of ram from 4870's and give it another spin........

[hipro5]

I don't know how more clear I can be....I think the ram clocks and timings of the ram on the 4890 are hindering core clocking........Import the timings and clock speeds from 4870's and give it another spin........

If you go BACK to the 1900XTXs, you'll see that NOTHING could overclock them from a certain CORE frequency and above....
ONLY an OLD modified atitool which changed its frequencies DIRECTLY inside its cores....
Not through software or anything like that....

[hipro5]

I want to add something to this which perhaps may disappoint some of you and bring in an "uncomfortable situation" the ATI company/designers...

Those 4890s, DO NOT have a 5 phase VGPU design as the reviewers have told you and ATI DIDN'T EVEN mentioned that (by mistake? ), BUT instead, it has ONLY THREE phases as for it's main core.

SO DON'T expect to overclock it ONLY with a bios fix (which personally I don't believe it'll help much or not at all).....
PLUS some/many/all of you may SEE frequencies going up as is, but the card works to the frequencies SHE WANTS and NOT as YOU have picked....
You NEED hardware mods to do so....

.......to be continued......

[Vivi]

bring on the mods el-george !

[The-Fox]

George, you don't need to make excuses or explain why you will mod the hell out of this card, just do it man

With your modding skills, you might go to sleep one night and by morning, it will magically be extremely modded, apparently because you modded it while sleeping

J/K

So, basically what you are saying that regardless of software/bios fixes (if an when they will come at all), those cards doesn't have a lot of juice in them anyway due to lack of phases ?